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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
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All Constellations » Crux » 


Altitude: -76.1°   Azimuth: 133.9°   Direction: South-East

HR4823 is a variable sub-giant star in the constellation of Crux.

HR4823 visual magnitude is 4.93. Because of its moderate brightness, HR4823 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR4823:


HR4823 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -76.1°
Azimuth: 133.9°
Direction: South-East

Celestial coordinates and finder chart of HR4823

HR4823 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4823 are provided in the following table:

12h 41m 56s
-59° 41’ 08”

The simplified sky map below shows the position of HR4823 in the sky:

Finder chart HR4823 star
Simplified finder chart for HR4823.

Visibility of HR4823 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR4823 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR4823

The image below is a photograph of HR4823 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR4823 is -0.025 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4823 star
DSS2 image of HR4823. The red arrow shows the motion of HR4823 during the next 10000 years (-4.17 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR4823 from the Sun and relative movement

HR4823 is distant 1,034.92 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

317.46 pc
1,034.92 ly
13 km/s
-0.025 arcsec/year
-0.002 arcsec/year

Spectral properties of HR4823

HR4823 belongs to spectral class B6 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR4823 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4823. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4823